Edward hill



(No Model.)

v E. HILL.

. LOOM PATTERN CHAIN AND BARREL THEREFOR.

No. 486,337 Patented Nov. 15, 1892.

UNiTnD TATES ATENT rrrcn.

EDWARD HILL, OF KEIGHLEY, ENGLAND.

LOOM PATTERN-CHAIN AND BARREL THEREFOR.

SPECIFICATION forming part of Letters Patent No. 486,337, dated November15, 1892.

Application filed March 21, 1892. Serial No. 425,809. (No model.)

To all whom, it may concern.-

Be it known that I, EDWARD HILL, a subject of the Queen of GreatBritain, residing at Ethel Street, Keighley, in the county of York,England, have invented a new and useful Improvementin LoomPattern-Chains and Barrels Therefor, of which the following is aspecification.

My invention relates to improvements in loom patternchains of the classwherein cams are mounted upon bars or pins coupled or joined together bylinks; and the object of my invention is to construct said cams andlinks in such a manner that they may be cheaply and quickly produced,and so that when complete they shall be sufficiently strong to performtheir functions, yet less cumbersome than are those as heretofore construeted, and to construct the barrel over which they operate, so as toassist the links in the holding of said cams in position when they arebeing brought into connection with the parts that they are designed tooperate. These objects I attain by constructing said cams in parts, sothat they may be made of sheet metal, which is stamped or cut by dies,the parts thus formed being then folded and fixed together to form thewhole, while hetween the sprocket ends of the barrel I fix longitudinalribs in such relative positions with those assumed by the camsin theirmovements around said barrel that when in certain positions they (saidcams) are supported by these said ribs.

My invention is illustrated by the accompanying sheet of drawings, ofwhich- Figures 1 and 2 are front and sectional end elevations of thepattern-chain and its barrel. Fig. 3 is a perspective view, enlarged,showing the cams mounted upon their tube; and Fig. 4 is a similar viewshowing the cam detached. Figs. 5 and 6 are illustrative of the blankbearing the cam-surface and the bended or folded hub, which whenattached to said blank forms the complete cam. Fig. 7 shows the blankfrom which the hub is formed by same being bent, as shown by Fig. 6.Fig. 8 is a perspective view of a link to which a hub is attached, as isthe hub to the cam, while Fig. 9 shows the link without the hub, the onewithout the hub, Fig. 9, being used at one extremity of the tubecarrying the cams and the other with the hub, Fig. 8, being used at theother extremity of said tube.

Each of the cams forming the subject-matter of this invention is formedby the part or blank (1, of the contour shown, being stamped or cut outof sheet metal, said blank at having radial notches b b 17 made in thecircular part of its central opening a, into which notchesb are made tofit the longitudinal projections 01 of the hub 6, these said projections01 being bent over the edges or rims of the parts Ct, so as to betherebysecurely attached thereto and held in proper relative positiontherewith, while the other projections f are made to extendlongitudinally from said hub e, so that they may fit loosely within inorder to be detachable from the radial openings b in any cam that may beplaced in proximity therewith when mounted upon the tubes g, by whichmeans they are enabled to hold each other in position.

The hub e is formed by the stamped or cut blank shown by Fig. 7, beingmade cylindrical by any of the well-known methods, and since the cams aare to couple with the links it and is, mounted, respectively, upon eachof the extremities of the tubes g, upon which said cams are mounted, inorder to be held in position by these links it and lo I attach one ofthese hubs e to one or other of the said links I h or k-such as, say,the link k-this attachment being effected as its attachment to the partit already described. The links it or 79, having the hubs e rigidlyattached to them, are only used at one or other of the extremities ofthe tubes g, the other and opposite extremities of said tubes g beingoccupied by links, to which the hubs e are only detachably coupled, forthe obvious reason that said hubs will be attached to the cams adjoiningthem.

The barrel around which the pattern-chain above described has to operateis formed by the sprocket-wheels Z and m, being mounted upon the shaftn, and inthe space between these wheels Z and m are fixed thelongitudinal ribs 10. The positions occupied by these ribs p are such asnot to interfere with the cams a, that are extending from theirrespective tubes g inwardly, fromfreely assuming any position they mayoccupy in their course around said barrel, yet these ribs p are soplaced that they lend their aid to the supporting of the said camsawhile performing their respective operations, this support beingeffected by said ribs 73 by reason of those ofsaid cams a that extendinwardly abutting against them, so that those cams a that are thusotherwise inoperative assist those that are in operating positions toperform their functions properly.

As is shown by Fig. 2, the respective positions in which the ribs 19 areplaced are not so that their radial center lines will converge in thecenter of the shaft 71 but so far out of such positions as to make theouter lateral surfaces of said ribs p conform to the contour of the camsa. Otherwise said cams a would not be permitted to assume their properand desired positions when passing around their operating-barrel.

Having thus described the nature and object of myinvention, what I wishto secure by Letters Patent is- 1. A cam consisting of two parts ofsheet metal, one piece being a hub and the other the cam-piece proper,the latter being provided with notches, said hub having projectionsextending in opposite directions from the ends thereof, the projectionson one end extending through and fastened in notchesin the cam-piece andthe projections on the opposite end adapted to enter notches in the nextadjacent cam, substantially as described.

2. A patternsurface can] consisting of two parts, one part being a huband the other a plate having an aperture the walls of which surround andhold the hub, substantially as described.

3. A chain-link composed of a plate and a hub, said hub being insertedin an aperture in one end of the link and provided with projections forsecuring said hub and link together, substantially as described.

4. In a pattern-chain, in combination with cams having recessed hubs, alink comprising a plate, and a hub made of separate pieces, the hubbeing inserted in the plate and provided with projections on one endengaging with said plate and on its other end with projections engagingin the recesses in the hubs ot' the cams, substantially as described.

5. The combination of a pattern-barrel having sprocket-wheels at theends and ribs extending from wheel to Wheel, of a patternchain havingoperative and inoperative cams locked together and its inoperative camsarranged to come in contact with said ribs and thus support theoperative cams, substantially as described.

EDWARD HILL.

WVitnesses:

J OHN WHITEHEAD, HARRY ELLISON.

